D T S
|-------27---------|
|------------35-----------|
DS=27+35=62
the answer is 62
Answer: The percent of red lights last between 2.5 and 3.5 minutes = 95.44% approx.
Step-by-step explanation:
Given: Mean time = 3 minutes
standard deviation = 0.25 minutes
The probability of red lights last between 2.5 and 3.5 minutes :-

The percent of red lights last between 2.5 and 3.5 minutes = 95.44% approx.
Answer:
Step-by-step explanation: 4,000 + 50
The answer would be B! This is because when multiplying 350 by .7, you are taking away the 30% which was originally part of the 350. Hope this helps!
Answer:
.27
Step-by-step explanation:
4.5*6/100
=.27